<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        div{
            background-color: #ff0000;
            border-top: 5px solid rosybrown;
            border-bottom: 5px solid springgreen;
        }
    </style>
</head>
<body>
<div>
    页面没有找到
</div>
</body>
</html>